I have a 420 predator hemi, arc rod,arc flywheel,34 m.m. Flat slide carb,billet side cover, dyno 275 cam with dyno dual springs with the inner springs removed here’s my issue the compression works for about20 times using the onboard electric starter.first time I pulled off the side cover and found the arm bent arm.arc sent me a new cam even though I new it wasn’t their fault the cam I removed was a dyno .308 I put in a .275 because that’s what they had in stock and didn’t want to wait. after starting with no problem for 15to 20 times ,same issue I’ve yet to pull it apart yet but with.002 clearance on the exhaust there is no compression release pop up. Have anyone experienced this problem . Ron